Operation Mode Automatic Pump Type Piston Pump Voltage AC 220V ± 22V Frequency 50 Hz ± 1 Hz Number of Glass Jars 2 Jars Noise ≤ 65 dB (A) Max Vacuum 90 KPa Tube Material Silicone Pipe Pumping Rate ≥ 20 L/min Reservoir Capacity 2500 ml Power Source Electric Max Negative Pressure Value >0.09 MPa Weight 14 kg Power ≤ 180VA Continuity Rate 50%